internal ElementMetadata(
ReadOnlyArray <AttributeMetadata> attributes,
ReadOnlyArray <IValidator> validators,
ReadOnlyArray <IValidator> constraints,
FileFormatVersions version,
OpenXmlSchema schema,
CompiledParticle particle,
Lazy <ElementLookup> lookup)
{
Attributes = attributes;
Validators = validators;
Constraints = constraints;
Availability = version;
Schema = schema;
Particle = particle;
_children = lookup;
}
public OpenXmlElement?Create(OpenXmlSchema schema)
{
if (_data.Length == 0)
{
return(null);
}
// This is on a hot-path and using a dictionary adds substantial time to the lookup. Most child lists are small, so using a sorted
// list to store them with a binary search improves overall performance.
var idx = Array.BinarySearch(_data, new ElementChild(null, schema), ElementChildNameComparer.Instance);
if (idx < 0)
{
return(null);
}
return(_data[idx].Create());
}
private ActivatorElementChild(Type child, OpenXmlSchema schema)
: base(child, schema.NamespaceId, schema.Tag)
{
}
public ElementChild(Type?type, OpenXmlSchema schema)
{
Type = type;
Schema = schema;
}
